Reinforced fabric strap



ZAQSJ Jan, 7,190 I 1. SHAMES REINFORCED FABRIC STRAP 2 sheets-s eet 1 Filed March 4, 1947 1'. Siwmm Name 17, SHA S REINFORCED FABRIC STRAP 2 Sheets-Sheet 2 INvENTaR. Sham m- HT'ZWEY.

Filed March 4, 1947 Patented Jan. 17, 1950 UNITED STATES OFFICE meals:

amen-om isms? Irving ShamesjBrooklym, N. npumuonivrerha:r947,serial-Nansen (ova-res) 2 Claims.

ifIhis invention relates to !a :fabric strap having strap having reinforced side edges which is :simple :and. inexpensive to make.

it is another object of the invention to make a strap having reinforced side edges by :providing :a web of fabric, simultaneously folding the web longitudinally upon itseliy-folding the marginal portions of the web into the longitudinal :iold and engaging reinforcingstrands into the longitudinal :fold Jan'd'the "fold of one of thermarginal portions, and successively stitching the folded iweb parallellyof the folds and entire inner sides ;of the strands to retain the "strands the folds.

It .is a further-object of the invention to provide a folder arranged to fold a web longitudinally and :fold the marginal portions into the longitudinal -fold and a pair of members detachably mounted on the .folder to guide reinforcing :stra-nds into the longitudinal .fold and "the fold of one'oi the marginal portions.

Other objects and advantages of the invention will appear in the detailed description thereof.

In the drawings accompanying and .iorm ing a part of this application, Figure v1 is .a top plan view of a folder mounted on a double needle "sewing machine and constituting rm'eans Tor carrying out the invention.

Figure "2 is a side 'elevational view "of the folder .mounted on the sewing machine looking attire fbottom "of Figure 1. I

Figure '3 'is a longitudinal "sectional view of the folder sh'owingthe mountingof the strand grridin'g members on the folder.

"Figure '4 is a view of one "face of the folder looking at the bottom of Figure 3.

Figure ":5 is an end view, on an enlarged sc'ale, 0f the folder looking at the delivery endthereof.

Figure 6 is a cross sectional view taken-en the line "6 6 of Figure 4 looking "in the direction of the arrows to show the hape er the side walls of the folder and the posltionsoi theistrand guide members in the folder.

Figure 7 is a View of thebottomiace oi 'aipresser ffo'ot showing grooves for the reinforced edges :of

"a strap. V

Figure 8 is an end view oi'the tolder'ilodking at the receiving end thereof.

Figures 9 and '10 are side and "plan views,

ispectively, of the strand guide :rrrenibers.

Figure 1 1 is a diagrammatic "ViBW- :of ;a web illustrating the folding o'f "theweb and engaging of strands in the folds.

.='sew-ing machine-consisting "of 'a support 3 hav- "mg an opening 14 for thezreciprocatory horizontal movement of feeding mechanism 15., 'as shown :in fiFigure '22. (A head 16 .is mounted to extend .zspacedrel'ation:aboveithe:support .l 3 and in vertiroal alinement the opening l4, and a bar 11! reciprocates iinra :vertical direction in the head and 'detacha'bty carries a pairyof needles l-B. bar :19 :also reciprocates in "a vertical direction the/head i5 :a'tthe rear 702i the needle bar :H and .deta'chably carries a pivotal 'presser foot 20 "having a'rpairnf openings 2.! im the passage of the needles 1:8. The underf-ace of the presser -front is arrangedrwitha channel having abeveled race, iasnt 212 in Figure 7., "at one end of thetpresser'f'foot and :a pair of :grooves 2s merging with said Zbeveled ffa'ce .22 and extending through -=oorresponding router circumferential portions of the openings 2 ltbthe-zopposite end of the presser afoot. "The 'ie'edingmechanism l5, needle bar H and 'presser bar i i! are operated in the usual manner In marrying out the invention as illustrated in itheiaccompanying drawings, there is provided "a folder including eaone piece member having at nine-end a downwardly curved xlip portion v24 :con- Stituting the receiving end of the .folder anid :anerging with :a threat portion .25 tapering from the "lip portion .24 the delivery end of the fielder and having side walls progressively curved inwardly tr'om the lip portion r24 -to the narrow delivery tend of the throat portion, so that the sidewalls adjacent tothe lipportion .24 are .substan-tially vertical :to the lip portion, as at 26 in Figure 3, with the edge sections folded downwardly, "asfiat 2:1 in FiguresB and 4. The side walls adjacent to r-the portions 26, 21 .are extended a horizontal plane, :as at .28 (in Figure 6, with --"the *edge sections fielded parallel spaced relamerit mandjifiolding the .marginal gportions m of the web into the longitudinal fold, as at f in Figures 11 and 12.

The web w is guided to and retained against the bottom wall, side walls and edge sections of the side walls of the throat portion of the folder by a bifurcated plate having a connecting portion 3| supported at the sides by the vertical side wall sections 26, as shown at 32 in Figure 8. Leg portions 33 extend in a downwardly curved direction from the connecting portion 3| to con-' form to the longitudinal curvature of the bottom wall of the folder, as shown in Figure 3, and

curve longitudinall from an intermediate point fifthe throat portion of the folder. The

, needle shaped portion 41 extends from the plate to the extremities of said leg portions to conform to the curvature of the side walls of the throat portion, as shown in Figures 3 and 6. The extremities of the leg portions are slightly curved inwardly, as indicated at 34, and terminate at the point of commencement of the vertical edge sections of the throat portion.

The folder is mounted upon the support l3 of the sewing machine by a bracket having a base plate mounted on the support l3, as by screws, and a boss 36 at one end. The folder is adjustably supported on the bracket 35, 36 by an angular arm having one side portion 37 rotatably engaged in the boss 36 and the other side portion 38 offset from the first side portion 37 and adjustably engaged in a boss 39 on the bottom wall of the throat portion 25. The arm portion 3! is secured. in adjusted position in the bracket boss 36-by' set screws 46 and the arm portion 38 is secured in adjusted position in the folder boss 39 by a set screw 4|. The adjustments of the arm 3?, 38 in the bracket 35, 36 and of the folder 24-44 on the arm portion 38 permit positioning of the delivery end of the folder throat relative to the needles I 8 and presser foot 28, as shown in Figures 1 and 2.

The web w is'fed from a source of supply, such.

'as a roll, supported by the support I3or in any other suitable manner, not shown, and is guided to the receiving lip portion 24 by suitable guiding and tensioning means, not shown. The web 21 is fed through the folder by the feeding mechanism l5 of the sewing machine and other suitable feeding means, not shown, if deemed necessary.

During the folding of the web in the folder 24-34, reinforcing members, such as strands in the form of cords c, c are fed from spools s rotatably supported by the support l3, as shown in Figure 1. The cord c i s directed into the longitudinal fold, and'the cord 0 is directed into "the fold of the'uppermost marginal portion m {during the forming of said folds by the throat portion 25 of the folder. The cords are guided into the throat portion 25 of the folder from the 'receiving lip portion 24 by a guide member comprising a plate portion 42 having a lip portion 43 extending from one end of the plate portion portion 42 in the plane of said plate portion and an intermediate section of said needle shaped portion 2'! is bent from the face of the plate portion from which the wall 44 extends but to a lesser extent than the needle shaped portion in spaced relation to one face of the plate por- 'tion 42 and a wall portion 44 extending from the same end of the plate portion and at a right angle from the opposite face of the plate portion and arranged with two openings 45,'one opening being adjacent to aside edge of the'w'a'll portion 44 and the other opening being adjacent to the opposite'side of the center of the plate portion, as shown in Figures 4 and 8. A pair of rods or needle shaped portions 46 and 41 are fixed at one end on the end of the plate portion 42 opposite the end of said plate portion arranged with the lip portion 43 and wall portion'4'4in substantial alinement with. the openings in the wall portion 44. .The opposite ends of the retain said plate fold f, as shown in Figure 11.

removed from J desired lengths.

46, as shown in Figure 9. The cord guide member 42-48 is detachably mounted on the receiving end of the folder by slidably engaging the plate portion' 42 and lip portion 43 on opposite faces of a bridge portion 49 fixed at the opposite ends to the vertical wall sections 26 of the folder and extended in spaced relation to the web guide connecting portion 3|, as shown in Figures 3 and 8, with the wall 44 extending in a direction from the lip portion 24 of the folder. The exposed face of the bridge portion 49 is arranged with shoulders at the opposite ends to engage the opposite sides of the plate portion 49 and portion against lateral movement on the bridge portion. When the plate portion 42 is mounted on the bridge portion 49,

the slotted end of the needle shaped portion 46 will extend into the tubular structure of one of the side walls of the throat portion 25 of the folder, as shown in Figure 4, and the slotted end of the needle shaped portion 41 will extend into the bifurcation of the web guide plate 3|34.

The cords c, c are extended from the spools s through the openings 45 and cord 0' is extended "between the needle shaped portion 46 and the wall of the throat portion 25 of the folder and passed through the slot 48 in said needle shaped portion 46 from the underside to the upperside of the needle shaped portion which will guide said cord into the fold f of the upper marginal portion m, as shown in Figure 11. The cord 0 is extended from wall portion 44 along the needle shaped portion 41 and passed through the slot 48 in said needle shaped portion from the upperside to the underside of the needle shaped portion 41 which will guide said cord into the longitudinal The feeding mechanism 15 of the sewing machine will also feed the cords through the folder with the web w.

When the web 20 is discharged from the delivery end of the folder, it is completely folded with the cords in the proper folds f, f and as the folded web with the engaged reinforcing cords c, 0 leave the delivery end of the folder,

the needles [8 form lines of stitching 25 through c, c, as shown in Figure 12.

The folded and stitched web when it leaves the presser foot 20 is in the form of a completed strap having the edges reinforced by the cords c, 0. Such a strap has various uses but it is particularly adapted for shoulder straps for womens undergarments, such as slips and brasslres, for which purpose the strap after it is the sewing machine is cut into Having thus described my invention, I claim:

1. As an article of manufacture, a strap having substantially flat outer side faces and comprising a web folded longitudinally substantially centrally of its side edges, and the side portions folded inwardly into the longitudinal fold, the layers of material lying flat one against the other, the first longitudinal fold and the folds of the side portions forming the side edges of the strap, and strands engaged and secured in the first mentioned fold and in the fold of one of said side portions to reinforce the strap at its side edges.

2. As an article of manufacture, a strap having substantially flat outer side faces and comprising a web folded longitudinally substantially centrally of its side edges, and the side portions folded inwardly into the longitudinal fold, the layers of material lying fiat one against the other, the first longitudinal fold and the folds of the side portions forming the side edges of the strap, and strands engaged in the first mentioned fold and in the fold of one of said side portions 6 to reinforce the strap at its side edges, and stitching along the folds of the web at each side marginal portion of the strap to secure the strands in said folds.

IRVING SHAMES.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS 

